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Transformer for realizing voltage change through changeover of leads

A transformer and lead wire technology, applied in the field of transformer manufacturing, to achieve the effects of reducing loss, avoiding local overheating, and meeting strength requirements

Active Publication Date: 2014-03-12
特变电工山东沈变电气设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no report on the transformer that realizes two kinds of voltage conversion by changing the lead wires.

Method used

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  • Transformer for realizing voltage change through changeover of leads
  • Transformer for realizing voltage change through changeover of leads
  • Transformer for realizing voltage change through changeover of leads

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with accompanying drawing.

[0025] like Figure 1~2 As shown, the transformer in the present invention realizes voltage change through the exchange of lead wires, and has high-voltage bushings, low-voltage bushings, high-voltage neutral point bushings, oil conservator, oil tank, tank cover, cooling device and off-excitation tap changer , the fuel tank 6 is provided with a three-phase three-column iron core structure, and the three-phase three-column iron core is respectively fitted with a low-voltage winding I22, a high-voltage winding, a voltage-regulating winding and a low-voltage winding II23 from the inside to the outside, the low-voltage winding I22 is connected in series with the low-voltage winding II23, and the low-voltage winding Ⅰ22 is the left winding direction, and the low-voltage winding II23 is the right winding direction. The two low-voltage windings are connected from the beginning to ...

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Abstract

The invention relates to a transformer for realizing voltage change through changeover of leads. The transformer comprises a high voltage bushing, low voltage bushings, a high voltage neutral point bushing, an oil storage cabinet, an oil tank, a box cover, a cooling device and a tap-changer without excitation, wherein a three-phase three-column iron core structure is arranged in the oil tank; the three-phase three-column iron core is sleeved with a low voltage winding I, a high voltage winding, a voltage adjusting winding and a low voltage winding II from inside to outside respectively; the low voltage winding I is connected in series with the low voltage winding II; the low voltage winding I is wound leftwards; the low voltage winding II is wound rightwards; the two low voltage windings are connected end to head; the head part of the low voltage winding II is arranged at the upper end; and two low voltage windings are connected with a power generator by three low voltage bushings through changeover of the leads at the upper and lower parts. According to the invention, two low voltages are realized through changeover of two sets of leads, so that the two low voltages can be guaranteed to be connected with the power generator, and the technical parameters, the field external limitations, the foundation bearings and the weight requirements of the transformer in the prior art are satisfied at the same time.

Description

technical field [0001] The invention relates to the technical field of transformer manufacturing, in particular to a transformer that realizes voltage change through the exchange of lead wires. Background technique [0002] Foreign transformers, as power transmission and transformation equipment in the power industry, are mostly used in occasions such as power expansion or backup transformers. Their transportation and installation are often limited by the outer limit of the site, the load-bearing capacity of the foundation, and technical parameters. If the conventional structure is adopted, under the condition of satisfying the original transformer technical parameters, the weight of the transformer will increase, which cannot meet the load-bearing requirements of the site foundation; at the same time, the external dimension will increase, which cannot meet the requirements of the external limit of the site. In order to realize the change of the low voltage and the two volta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F29/02H01F27/28H01F27/26H01F27/36H01F27/14
Inventor 钟俊涛高丹方明孙树波
Owner 特变电工山东沈变电气设备有限公司
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